<\/span><\/h2>\nVi\u1ec7c ph\u00e1t minh ra t\u00fai ni l\u00f4ng \u0111\u00e3 mang l\u1ea1i nhi\u1ec1u ti\u1ec7n \u00edch cho cu\u1ed9c s\u1ed1ng c\u1ee7a con ng\u01b0\u1eddi, tuy nhi\u00ean ng\u00e0y c\u00e0ng nhi\u1ec1u ng\u01b0\u1eddi ch\u01b0a hi\u1ec3u c\u00e1ch s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3 b\u1ea3o v\u1ec7 m\u00f4i tr\u01b0\u1eddng d\u1eabn \u0111\u1ebfn t\u00ecnh tr\u1ea1ng \u00f4 nhi\u1ec5m t\u00fai ni l\u00f4ng to\u00e0n c\u1ea7u.<\/span><\/p>\n